Exercise: Machine Design

Questions for: Machine Design

When a nut is tightened by placing a washer below it, the bolt will be subjected to
A:
tensile stress
B:
compressive stress
C:
shear stress
D:
none of these
Answer: A
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When two non-intersecting and non-coplaner shafts are connected by gears, the arrangement is known as
A:
spur gearing
B:
helical gearing
C:
bevel gearing
D:
spiral gearing
Answer: D
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The maximum normal stress theory is used for
A:
brittle materials
B:
ductile materials
C:
plastic materials
D:
non-ferrous materials
Answer: A
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The rolling contact bearings as compared to sliding contact bearings have
A:
small overall dimensions
B:
accuracy of shaft alignment
C:
low starting and low running friction except at very high speeds
D:
all of the above
Answer: D
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When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic number should be __________ the bearing modulus.
A:
5 times
B:
10 times
C:
15 times
D:
20 times
Answer: C
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